Dynarex Pre-Filled Saline Flush Syringes are convenient, integrated needle-free systems designed to safely and efficiently flush compatible intravenous administration sets. These sterile, disposable syringes come pre-filled to reduce the risk of cross-contamination and minimize syringe-generated blood reflux. Clearly marked with graduations for accurate dosing, the syringes feature an easy screw-tip cap to minimize the risk of microbial contamination..